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Alternative Fuel: Ethanol Production from Plant Material By Saujan Sivaram November 17, 2005
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Why? World Consumption of Oil –75 Million Barrels Daily (2004) 21 Consumed by US Decrease Rate of Oil Consumption –Allows for further energy research –Possible quick fix
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How Can Ethanol Be Used? Gasoline Enrichment –Burns Cleaner E-10 E-85 –Raises Octane Number Reduces Spontaneous Combustion (Knocking) Replaces Methyl Tertiary-Butyl Ether Source of Hydrogen?
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Other Uses?
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Agricultural Stats 9 Billion Bushels of Corn last year –38% of World Production –20% Used for Ethanol 3 billion gallons of ethanol a year
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How is it Made?
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Actual Steps Milling –Wet or Dry Chemical Breakdown (Enzymes) –Heated to 225 o F –Starch Breakdown Fermentation –Only 10% conversion to ethanol
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Economics $4.69 per gallon ethanol –45 kWh –1.6 gal ethanol = 1 gal gasoline –Projected to cost $1.07 $2.05 per gallon gasoline –35 kWh 1 Btu fossil fuel = 1.3 Btu output
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Advances Bt Corn! –Insect Repellant –Starch-Water Ratio Cheap Enzymes –Less Heat Needed Farm Operation –Milling Techniques
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Federal Policy Clean Air Act of 1990 –Lead Removal –Reformulated Gas Energy Policy Act of 1992 –Reduce Dependence on Foreign Oil –Mandated Alt. Fuel Vehicles Renewable Fuels Standard –Use 7.5 bil gal ethanol by 2012
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Minnesota State Policy As of 1997 all gas must be E-10 Proposed in 2004 that all gas contain E-20 by 2013
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Conclusions 21 Million Barrels Oil Used by US Ethanol Increases Octane Number 9 Billion Bushels of Corn last year 1 Btu fossil fuel = 1.3 Btu output
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References “Map & Graph: Energy: Oil Consumption - Thousand barrels daily.” Nationmaster.com. Nov 6 2005. http://www.nationmaster.com/graph/ene_oil_con_tho_bar_dai. Buchheit, Joshua K. “History of Ethanol Production.” Rural Enterprise and Alternative Agricultural Development Initiative. Nov 7 2005. http://www.siu.edu/~readi/grains/factsheets/historyofethanolproductio n.pdf. http://www.siu.edu/~readi/grains/factsheets/historyofethanolproductio n.pdf http://www.siu.edu/~readi/grains/factsheets/historyofethanolproductio n.pdf “Ethanol Production Information.” Iowa Corn Growers Assocation. Nov 7 2005. http://www.iowacorn.org/ethanol/ethanol_6.html. http://www.iowacorn.org/ethanol/ethanol_6.html “1923: Death By Moonshine.” http://homicide.northwestern.edu/documents/prohibition.jpg
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